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   Pantone color charts use the suffixes C for Coated (coated or glossy coated paper) and U for Uncoated (uncoated or matte paper). These are the two most commonly used spot color systems in the printing industry, essentially representing the color rendering difference of the same color code on different paper substrates. C, Coated: Coated or glossy. Suitable for coated paper, matte paper, glossy cardstock, PET, PVC, and other smooth/coated substrates. The ink produced will have high gloss, high concentration, full ink layer, strong reflection, and bright, saturated colors. Characteristics include bright, vibrant colors, good dot reproduction, and minimal color difference. U, Uncoated: Uncoated or matte. Suitable for offset paper, kraft paper, matte specialty paper, corrugated paper, uncoated ordinary paper, and other rough, uncoated papers. The printed ink will have a matte formula, strong penetration, and low gloss. The characteristics are a darker, grayish hue and lower sat...

 A spectrophotometer (such as X-Rite 528/530, i1Pro, etc.) is required, and the printed sample must have solid CMYK color patches (100% dot coverage). Measurement Steps: 1. Turn on the instrument and select T state/ISO standard. 2. Calibrate the white patch. 3. Measure the C, M, Y, and K solid color patches respectively. 4. Read the four values: C, M, Y, and K solid density. Determining if it meets the standards (commonly used for offset coated paper): 1. Cyan (C): 1.35 ~ 1.50 2. Magenta (M): 1.30 ~ 1.45 3. Yellow (Y): 0.95 ~ 1.10 4. Black (K): 1.50 ~ 1.70 As long as it is within the range, the ink volume is qualified; When the values ​​are too low, the ink is insufficient, the color is light, and it appears grayish. When the value is too high, it results in excessive ink, ink smearing, slow drying, and poor overprinting. For batch consistency, the density difference of the same color in different locations should be ≤ ±0.05. Exceeding this range indicates unstable ink volume and s...

  Core Differences at a Glance   - CO₂ Laser Machine: Long-wave thermal processing, mainly for non-metal cutting and engraving, cost-effective. - Fiber Laser Machine: Medium-wave for metals, leading in metal processing efficiency and stability. - UV Laser Machine: Short-wave cold processing, ultra-fine with minimal thermal effect, ideal for precision materials.   Key Parameters & Applications   Dimension CO₂ Laser Fiber Laser UV Laser  Wavelength 10.6 μm (mid-infrared) 1064 nm (near-infrared) 355 nm (ultraviolet)  Processing Mechanism Thermal effect: melting / vaporization Thermal effect: evaporation / oxidation Cold processing: breaking molecular bonds  Core Advantages Wide compatibility with non-metals, low cost High absorption rate for metals, fast speed, maintenance-free Ultra-fine, no deformation, no carbonization  Suitable Materials Wood, leather, acrylic, fabric, some plastics Stainless steel, aluminum, copper and other metals; some eng...

1. principle of laser technology: laser is divided into three kinds, one paper itself is a laser effect, and the other is hot stamping. And the laser film. Technology features: laser technology can form a rainbow color change on the surface of paper, forming different effects from different angles. Application scope: gift packaging, anti-counterfeiting packaging, fast consumer products and other fields of laser technology use guide how to apply: the pursuit of special effects, toothpaste often use material requirements: white card silver card laser silver card three kinds of design requirements: basically not limited, However, the text and text should not be too small to mark the requirements: to consider whether laser leakage, or hot laser process conflict: laser is usually not supercharged with hot stamping, silver, etc. 2. Pad white is printed on white ink on other colors, printing white is not used. Craft features: mat white is to prevent the bottom, while printing is often printe...

In the performance evaluation of laminated packaging films, peel strength is one of the most critical indicators. During the processing and application of laminated films, "poor peel strength" is a frequently encountered problem. Through summarization and induction, feedback regarding "poor peel strength" from customers and downstream users can be categorized into two types: "Below Design Value" Type: The measured peel strength is lower than the designed or planned value. "Unsatisfied Application Requirements" Type: The peel strength is inferred to be non-compliant based on other observed phenomena. I. Essential Knowledge and Skills Before Analysis Prior to analyzing poor peel strength, one should master the following: Orientation Identification: Correctly judging the relationship between the length/width of the pouch and the machine direction (MD) / transverse direction (TD) of the film. Geometric Dimensions: Including design/nominal size, ...